Abstract
The structure and magnetoresistance properties in sintered samples of La2/3Ca1/3Mn1-x Fe x O3(0≤x≤0.84) are studied by using Mössbauer spectroscopy, XRD and magnetic measurement. There are antiferromagnetic interactions between Fe and its nearest neighbors (Fe, Mn) when 0 <x ≤0.67, which are important factors influencing the double-exchange between Mn3+ and Mn4+, Curie temperature, magnetic moment and GMR. It is suggested that the Mn3+ (Fe3+) /Mn4+ system also consists of magnetic clusters with different sizes.
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References
Helmolt, R. Von, Wecker, J., Holzapfel, B. et al., Magnetoresistance in perovskitelike La2/3 Ba1/3 MnQ3 ferromagnetic films,Phys, Rev. Lett., 1993, 71: 2331.
Jin, S., Tiefel, T. H., McCormack, M. et al., Thousandfold change in resistivity in magnetoresistive La-Ca-Mn-O films,Science, 1994, 264: 413.
McCormack, M., Jin, S., Tiefel, T. H., Very large magnetoresistance in perovskite-like La-Ca-Mn-O thin films,Appl. Phys. Lett., 1994, 64: 3045.
Gong Guo-Qiang, Canedy Chadweck, Xiao Gang, Colossal magnetoresistance of 1000 000-fold magnitude achieved in the antiferromagnetic phase of La1-x Cax MnO3,Appl. Phys. Leu., 1995, 67(12): 1783.
Zener, C., Interaction between the d-shells in the transition metals,Phys. Rev., 1951, 82(3): 403.
deGermes, P. G., Effects of double exchange in magnetic crystals,Phys. Rev., 1960, 118: 141.
Xu Zuxiong, Xu Zhendong, Yang Huisheng et al., A generalized method for fitting complex Mössbauer spectrum,Chinese Science Bulletin, 1993, 38(21): 1761.
Simopoulos, A., Dallias, G., Devlin, E. et al., Spin Fluctuations in La2/3 Ca1/3 MnO3 probed by 57Fe and 19Sn M§bauer spectroscopy,Book of Abstracts, ICAME♪97: MO. T8. P15.
Caignaert, V., Maignan, A., Raveau, B., Up to 50 000 per cent resistance variation in magnetoresistive polycrystalline perovskites Ln2/3Sr1/3 MnO3 (Ln = Nd; Sm),Solid State Communications, 1995, 95: 357.
Jin, S. O., Bryan, H. M., Tiefei, T. H. et al., Large magnetoresistance in polycrystalline La-Y-Ca-Mn-O,Appl. Phys. Leu., 1995, 66: 382.
Urushibara, A., Moritomo, Y., Arima, T. et al., Insulator-metal transition and giant magnetoresistance in La1-xSrx MnO3,Phys. Rev. B, 1995, 51(14): 103.
Maignan, A., Simon, C., Caignaert, V., Magnetic field dependence of the resistance and magnetization of the giant magne-toresistive Pr0.7Ca0.25Sr0.05MnC 3 polycrystalline sample,J. Magn. Magn. Mater., 1996, 152: 1.
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Wang, X., Xu, Z. & Ma, R. Influence of Fe3+ on perovskite oxides: La2/3Ca1/3Mn1-xFe x O3 . Sci. China Ser. A-Math. 42, 750–757 (1999). https://doi.org/10.1007/BF02878994
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DOI: https://doi.org/10.1007/BF02878994